21777159

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{10181}}^1$

素因数の和:10238

約数の個数: 16

約数和(自身を含む): 31279104

約数和(自身を除く): 9501945

約数列:

[1, 3, 23, 31, 69, 93, 713, 2139, 10181, 30543, 234163, 315611, 702489, 946833, 7259053, 21777159]

約数ペア:

[(1, 21777159), (3, 7259053), (23, 946833), (31, 702489), (69, 315611), (93, 234163), (713, 30543), (2139, 10181)]